Geology Rocks, Minerals, and the Earth

Transcription

1 Rocks, Minerals, and the Earth Expanding Science Skills Series By LaVerne Logan Consultants: Schyrlet Cameron and Carolyn Craig COPYRIGHT 2010 Mark Twain Media, Inc. ISBN Printing No EB Visit us at Mark Twain Media, Inc., Publishers Distributed by Carson-Dellosa Publishing LLC The purchase of this book entitles the buyer to reproduce the student pages for classroom use only. Other permissions may be obtained by writing Mark Twain Media, Inc., Publishers. All rights reserved. Printed in the United States of America.

2 Table of Contents Table of Contents Introduction... 1 How to Use This Book... 2 Introductory Activity: K-W-L Rocks and Minerals... 3 Teacher Information... 5 Student Information... 6 Quick Check... 8 Knowledge Builder... 9 Unit 2: Layers of the Earth Teacher Information Student Information Quick Check Knowledge Builder Unit 3: Rocks and Minerals Teacher Information Student Information Quick Check Knowledge Builder Inquiry Investigation...19 Unit 4: Plate Tectonics Teacher Information Student Information Quick Check Knowledge Builder Unit 5: Soil, Weathering, and Erosion Teacher Information Student Information Quick Check Knowledge Builder Unit 6: Sedimentary Rocks Teacher Information Student Information Quick Check Knowledge Builder Unit 7: Igneous Rocks Teacher Information Student Information Quick Check Knowledge Builder Inquiry Investigation Unit 8: Metamorphic Rocks Teacher Information Student Information Quick Check Knowledge Builder Unit 9: The Rock Cycle Teacher Information Student Information Quick Check Knowledge Builder Unit 10: Sand Teacher Information Student Information Quick Check Knowledge Builder Unit 11: Fossils Teacher Information Student Information Quick Check Knowledge Builder Inquiry Investigation Rubric...60 National Standards Science Process Skills Definitions of Terms Answer Keys Bibliography EB Mark Twain Media, Inc., Publishers ii

3 Teacher Information Topic: Many individuals have contributed to the traditions of the science of geology. Standards: NSES Unifying Concepts and Processes, (F), (G) See National Standards section (pages 61 65) for more information on each standard. Concepts: Science and technology have advanced through contributions of many different people, in different cultures, at different times in history. Tracing the history of science can show how difficult it was for scientific innovations to break through the accepted ideas of their time to reach the conclusions we currently take for granted. Naïve Concepts: All scientists wear lab coats. Scientists are totally absorbed in their research, oblivious to the world around them. Ideas and discoveries made by scientists from other cultures and civilizations before modern times are not relevant today. Science Process Skills: Students will be collecting, recording, and interpreting information while developing the vocabulary to communicate the results of their reading and research. Based on their findings, students will make an inference that many individuals have contributed to the traditions of the science of geology. Lesson Planner: 1. Directed Reading: Introduce the concepts and essential vocabulary relating to the history of the science of geology using the directed reading exercise found on the Student Information pages. 2. Assessment: Evaluate student comprehension of the information in the directed reading exercise using the quiz located on the Quick Check page. 3. Concept Reinforcement: Strengthen student understanding of concepts with the activities found on the Knowledge Builder page. Materials Needed: cube template, scissors, glue, pencil Extension: Students research the history of the science of geology. Create an illustrated time line of scientists and important discoveries. Real World Application: The first geologist to reach the moon was Dr. Harrison Hagan Schmitt. In 1972, he was part of the Apollo XVII moon mission with Captain Eugene A. Cernan and Commander Ronald E. Evans. He and Captain Cernan landed on the moon and spent three days on the surface, gathering scientific data EB Mark Twain Media, Inc., Publishers 5

4 Student Information Geology is the study of the earth. Geology tries to explain how the earth was formed and how forces such as earthquakes, volcanoes, glaciers, and water change the surface of the earth. Scientists who study the earth are called geologists. Geologists believe the earth was formed more than 4.5 billion years ago. The first written information we have about the earth from ancient people is a mixture of facts, superstitions, legends, guesses, and the beliefs of the time. Through study and observation, scientists were able to slowly piece together the true history of the earth. In the 300s b.c., Theophrastus (c b.c.) wrote a mineralogy book, Concerning Stones. This work gathered together for the first time all known information about rocks, minerals, and fossils. Theophrastus Leonardo da Vinci ( ) recognized that material carried by rivers to the sea was eventually compacted into sedimentary rock and later uplifted to form mountains. Leonardo da Vinci In 1669, Nicolaus Steno ( ), a Danish physician, discovered sedimentary rocks are laid down in a horizontal manner and layers (strata) of rock are always deposited with the oldest layers on the bottom and the youngest layers on the top. These discoveries lead to the formation of the Laws of Superposition, which scientists use to determine the order in which geolgical events took place. Nicholaus Steno s work on the formation of rock layers and the fossils they contain was crucial to the development of modern geology. The principles he stated continue to be used today by geologists and paleontologists. Nicolaus Steno In 1785, James Hutton ( ) stated the earth was gradually changing and would continue to change in the same ways. He said these changes could be used to explain the past. Hutton, a Scottish farmer and naturalist, is known as the founder of modern geology. James Hutton In 1812, German scientist Friedrich Mohs ( ) devised a 1 10 scale system to determine the hardness of minerals. Common objects can be used in place of the mineral on Mohs scale to determine a mineral s hardness. By scratching unknown minerals with the suggested object in Mohs scale, scientists can identify collected specimens. Friedrich Mohs EB Mark Twain Media, Inc., Publishers 6

5 In 1815, William Smith ( ) was the first to use fossils to tell the age of rock layers (strata). He published the first geological maps showing the strata of England. Sir Charles Lyell In 1830, Sir Charles Lyell ( ), a British geologist, published the first volume of Principles of Geology. It was one of the most important events in the development of geology. He wrote that geological features take shape, erode, and reform at a constant rate through time. He was knighted for his scientific accomplishments in William Smith In 1907, Bertram Boltwood ( ), using the radioactive decay method, dated Earth s age as somewhere between 400 million and 2.2 billion years. This technique has been used since 1907, but advances in technology and knowledge of atomic structure have shown the earth to be even older. Bertram Boltwood In 1912, Alfred Wegener ( ) proposed his Continental Drift Theory. He believed that the continents once formed a supercontinent called Pangaea. The continents gradually broke apart, forming the seven continents. The continents slowly drifted to their present positions. Alfred Weneger In 1960, Harry Hess ( ) established that the surface of the earth is broken up like a jigsaw puzzle into enormous plates that move. This theory, called Plate Tectonics, helped support the idea that the continents drift on the earth s surface. It also explained the occurrence of mountains, volcanoes, and other geological features. Harry Hess Major Plates of Earth s Crust EB Mark Twain Media, Inc., Publishers 7

6 Name: Quick Check Date: Matching 1. geologists a. wrote Concerning Stones 2. Alfred Wegener b. the study of the earth 3. Theophrastus c. Continental Drift Theory 4. Harry Hess d. Plate Tectonics Theory 5. geology e. scientists who study the earth Fill in the Blanks 6. In 1907,, using the radioactive decay method, dated Earth s age at somewhere between 400 million and 2.2 billion years. 7. In 1812, German scientist devised a 1 10 scale system to determine the hardness of minerals. 8. recognized that material carried by rivers to the sea was eventually compacted into sedimentary rock and later uplifted to form mountains. 9. In 1830, Sir Charles Lyell, a British geologist, published the first volume of. 10. explained the occurrence of mountains, volcanoes, and other geological features with the Plate Tectonics Theory. Multiple Choice 11. He is known as the founder of modern geology. a. Friedrich Mohs b. James Hutton c. Nicolaus Steno d. Leonardo da Vinci 12. His Laws of Superposition helped scientists determine the order in which geological events took place. a. Theophrastus b. Sir Charles Lyell c. Nicolaus Steno d. James Hutton 13. He published the first geological maps showing the strata of England. a. William Smith b. Bertram Boltwood c. Leonardo da Vinci d. Nicolaus Steno EB Mark Twain Media, Inc., Publishers 8